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Thermal Imaging (thermal + imaging)
Selected AbstractsORIGINAL RESEARCH,PHYSIOLOGY: Thermography as a Physiological Measure of Sexual Arousal in Both Men and WomenTHE JOURNAL OF SEXUAL MEDICINE, Issue 1 2007Tuuli M. Kukkonen BA ABSTRACT Introduction., Current physiological measures of sexual arousal are intrusive, hard to compare between genders, and quantitatively problematic. Aim., To investigate thermal imaging technology as a means of solving these problems. Methods., Twenty-eight healthy men and 30 healthy women viewed a neutral film clip, after which they were randomly assigned to view one of three other video conditions: (i) neutral (N = 19); (ii) humor (N = 19); and (iii) sexually explicit (N = 20). Main Outcome Measures., Genital and thigh temperatures were continuously recorded using a TSA ImagIR camera. Subjective measures of sexual arousal, humor, and relaxation were assessed using Likert-style questions prior to showing the baseline video and following each film. Results., Statistical (Tukey HSD) post-hoc comparisons (P < 0.05) demonstrated that both men and women viewing the sexually arousing video had significantly greater genital temperature (mean = 33.89°C, SD = 1.00) than those in the humor (mean = 32.09°C, SD = 0.93) or neutral (mean = 32.13°C, SD = 1.24) conditions. Men and women in the erotic condition did not differ from each other in time to peak genital temperature (men mean = 664.6 seconds, SD = 164.99; women mean = 743 seconds, SD = 137.87). Furthermore, genital temperature was significantly and highly correlated with subjective ratings of sexual arousal (range r = 0.51,0.68, P < 0.001). There were no significant differences in thigh temperature between groups. Conclusion., Thermal imaging is a promising technology for the assessment of physiological sexual arousal in both men and women. Kukkonen TM, Binik YM, Amsel R, and Carrier S. Thermography as a physiological measure of sexual arousal in both men and women. J Sex Med 2007;4:93,105. [source] Thermographic assessment of tumor growth in mouse xenograftsINTERNATIONAL JOURNAL OF CANCER, Issue 5 2007Chengli Song Abstract In human breast tumors, a 1,2°C increase in skin surface temperature is usually observed at the periphery; it has been proposed that this change is due to the hypervascularity and increased blood flow resulting from tumor-associated angiogenesis. Here we tested the hypothesis that thermal imaging might represent a useful adjunctive technique in monitoring the growth dynamics of human tumor xenografts. Xenografts were established in immunocomprised nude mice using MDA-MB-231 or MCF7 breast cancer cells. We exploited the inherent noncontact and noninvasive advantages of infrared thermography to detect skin surface temperature changes. Continuous thermographic investigation was performed to detect and monitor tumor growth in vivo and high resolution digital images were analyzed to measure the tumor temperature dynamics. In contrast to the skin temperature increases associated with human breast cancer, a consistent temperature decrease was found in the xenograft mice. In one case, a smaller secondary tumor, otherwise undetectable, was clearly evident by thermal imaging. The tumors were cooler than the surrounding tissue with a maximum temperature reduction of 1.5°C for MDA-MB-231 tumor and 3°C for MCF7 tumors observed on day 14. In addition, the temperature of the xenograft tumors decreased progressively as they grew throughout the observation period. It was demonstrated that thermographic imaging could detect temperature changes as small as 0.1°C on the skin surface at an early stage of tumor development. The findings of the study indicate that thermographic imaging might have considerable potential in monitoring human tumor xenografts and their response to anticancer drugs. © 2007 Wiley-Liss, Inc. [source] Selenium-Based Glasses and Glass Ceramics Transmitting Light from the Visible to the Far-IRADVANCED MATERIALS, Issue 1 2007L. Calvez An innovative glass/glass ceramic based on the GeSe2,Ga2Se3,CsCl system is reported. This material is the first reported glass/glass ceramic transparent from the visible to the far-IR, has improved mechanical properties over selenide glasses, and is compatible with high-precision molding, making it suitable for applications in thermal imaging. [source] Spatially and temporally resolved thermal imaging of cyclically heated interconnects by use of scanning thermal microscopy,,MICROSCOPY RESEARCH AND TECHNIQUE, Issue 8 2008Nicholas Barbosa III Abstract A scanning thermal microscope with a Wollaston probe was used to investigate the spatial distribution and temporal variation of temperature in interconnect structures subjected to thermal cycling. The probe, utilized in passive temperature sensing mode, was calibrated from 20°C to 200°C using a single-layer aluminum microdevice. Spatial measurements were performed on nonpassivated aluminum interconnects sinusoidally heated by a 6 MA/cm2 current at 200 Hz. The interconnects were determined to have temperatures that decreased with position from a maximum located at the center of both the interconnect length and width. Time-resolved temperature measurements were performed on the same structures sinusoidally heated by a 6 MA/cm2 current at 2 Hz. Both the peak-cycle temperature and average-cycle temperature were found to decrease with increasing distance from the center of the width of the interconnects. Microsc. Res. Tech., 2008. Published 2008 Wiley-Liss, Inc. [source] ORIGINAL RESEARCH,PHYSIOLOGY: Sensation and Sexual Arousal in Circumcised and Uncircumcised MenTHE JOURNAL OF SEXUAL MEDICINE, Issue 3 2007Kimberley Payne PhD ABSTRACT Introduction., Research, theory, and popular belief all suggest that penile sensation is greater in the uncircumcised as compared with the circumcised man. However, research involving direct measurement of penile sensation has been undertaken only in sexually functional and dysfunctional groups, and as a correlate of sexual behavior. There are no reports of penile sensation in sexually aroused subjects, and it is not known how arousal affects sensation. In principle, this should be more closely related to actual sexual function. Aim., This study therefore compared genital and nongenital sensation as a function of sexual arousal in circumcised and uncircumcised men. Methods., Twenty uncircumcised men and an equal number of age-matched circumcised participants underwent genital and nongenital sensory testing at baseline and in response to erotic and control stimulus films. Touch and pain thresholds were assessed on the penile shaft, the glans penis, and the volar surface of the forearm. Sexual arousal was assessed via thermal imaging of the penis. Results., In response to the erotic stimulus, both groups evidenced a significant increase in penile temperature, which correlated highly with subjective reports of sexual arousal. Uncircumcised men had significantly lower penile temperature than circumcised men, and evidenced a larger increase in penile temperature with sexual arousal. No differences in genital sensitivity were found between the uncircumcised and circumcised groups. Uncircumcised men were less sensitive to touch on the forearm than circumcised men. A decrease in overall touch sensitivity was observed in both groups with exposure to the erotic film as compared with either baseline or control stimulus film conditions. No significant effect was found for pain sensitivity. Conclusion., These results do not support the hypothesized penile sensory differences associated with circumcision. However, group differences in penile temperature and sexual response were found. Payne K, Thaler L, Kukkonen T, Carrier S, and Binik Y. Sensation and sexual arousal in circumcised and uncircumcised men. J Sex Med 2007;4:667,674. [source] The application of temperature measurement of the eyes by digital infrared thermal imaging as a prognostic factor of methylprednisolone pulse therapy for Graves' ophthalmopathyACTA OPHTHALMOLOGICA, Issue 5 2010Shyang-Rong Shih Abstract. Purpose:, Graves' ophthalmopathy (GO) involves autoimmune process resulting in proptosis, congestion, oedema and diplopia. Werner's NOSPECS classification and clinical activity score (CAS) of GO cannot objectively describe the inflammatory status. Digital infrared thermal imaging (DITI) detects local temperature and may reflect the degree of orbital inflammation. The aim of this study was to evaluate the clinical application of the eye temperature measured by DITI. Methods:, Forty-six patients with GO receiving intravenously methylprednisolone pulse therapy (MPT) were included in this study. Local temperatures of the lateral orbit, upper eyelid, inner caruncle, medial conjunctiva, lateral conjunctiva, lower eyelid and cornea were measured with DITI before and after MPT. CAS, proptosis, eye movement (EOM) and diplopia were also recorded. Improvement of CAS was defined as at least one point decrease at either side of the eye, which was 0.5 score decrease as to the average of bilateral CAS. Results:, Local temperatures of the eyes decreased after MPT. The mean value of temperature (MT) of 12 points including the lateral orbit, upper eyelid, inner caruncle, medial conjunctiva, lateral conjunctiva and lower eyelid of both eyes before MPT was 32.65°. The mean change of MT after MPT (,T) was ,0.22°. ,T significantly negative-correlated with basal MT (correlation coefficient = ,0.54, p = 0.004). Higher baseline MT and CAS before MPT correlated with higher possibility of improvement of CAS after MPT (p = 0.013 and 0.012, respectively). Baseline MT and CAS together correlated with improvement of CAS after MPT better than baseline CAS alone could do (area under the receiver operating characteristic curve: 82.81% and 66.63%, respectively). Conclusions:, Basal temperature of the eyes measured by DITI was an objective indicator of inflammation of GO. Combining CAS and MT could better predict the outcome of MPT than CAS alone. [source] | ||||||||||